<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="content-type" content="text/html"/>
    <title>WebSocket客户端</title>

    <script type="text/javascript">
        var socket;
        if (!window.WebSocket) {
            window.WebSocket = window.MozWebSocket;
        }
        if (window.WebSocket) {
            socket = new WebSocket("ws://localhost:8888/websocket");
            socket.onmessage = function (event) {
                var ta = document.getElementById("responseContent");
                ta.value += event.data + "\r\n";
            };
            socket.onopen = function (event) {
                var ta = document.getElementById("responseContent");
                ta.value = "您当前的浏览器支持 WebSocket，请进行后续操作\r\n";
            };
            socket.onclose = function (event) {
                var ta = document.getElementById("responseContent");
                ta.value = "";
                ta.value = "WebSocket 连接已近关闭\r\n";
            };
        } else {
            alert("您的浏览器不支持 WebSocket");
        }

        function send(msg) {
            if (!window.WebSocket) {
                return;
            }
            if (socket.readyState == WebSocket.OPEN) {
                socket.send(msg);
            } else {
                alert("WebSocket连接没有建立成功");
            }
        }

    </script>

</head>
<body>

<form onSubmit="return false;">
    <input type="text" name="msg" value=""/>
    <br/>
    <br/>
    <input type="button" value="发送WebSocket请求消息" onclick="send(this.form.msg.value)"/>
    <hr color="red"/>
    <h2>客户端接收到服务端返回的应答消息</h2>
    <textarea id="responseContent" style="width: 1024px;height: 300px"></textarea>
</form>

</body>
</html>